Dumping-vehicle hoist.



n. w. ROSE.

DUMPING VEHICLE HOI ST.

APPLICATION FILED SEPT. 1, I916.

Patented. May 15, 191?.

and also ROBERT W. ROSE,

OF MARBLEHEAD, MASSACHUSETTS.

Specification of Letters Patent.

DUMZPING-VEHIGLE HOIST.

Patented May 15, 191i 7.

Application filed September 1, 1916. Serial No; 118,022.

To, all gvhom it may concern:

Be it known that I, Ronnn'r W. Rose, a citizen of the'United States, and resident of Marblehead, in the 'county of Essex and State of Massachusetts, have invented an Improvement in Dumping-Vehicle Hoists, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

vehicles, especially automobile coal .trucks or the like heavy articles in bulk. for such vehicles requires a' very powerful and efficient mechanical construction which will also secure a relatively high tilting or elevation in order to unload completely and quickly and also have a relatively low center of gravity. It will be appreciated that a five-ton load, for example, if supported at a considerable distance above the chassis of handling of upsetting the vehicle or throwing undue fore complex mechanism has been expensive to install and maintain, and the object of my present invention is to improve, simplify and perfect such hoisting mechanism and to enable a powerful, quick acting, strong,

hoisting mechanism to work within a very chassis and giving low center of gravity great power at the beginning of the hoisting action. A still further feature of the present hoist is the provision of a novel form of hoisting levers or bars which will extend forwardly at either side of and entirely clear from the transmission or other motor mechanism of the chassis, thus enabling a very long body and great length of hoisting levers to be carried. In carrying out the invention I prefer to utilize a single short vertical compass between vehicle body,

' length of hoisting member which is some which multiplicity what curved longitudinally, and to use cross braces spannlng a segment of such curve,

which gives great rigidity from torsional strains'of every description. I also prefer to form a'portion of the hoisting levers with an inclined plane surface to operate at the beginning of the hoisting action and to make said hoisting levers entirely free from all journal bearings, rolls, joints or the like,

of rolls and parts is very present invention is an improved hoisting apparatus for intended for use in elevating heavy loads of Hoisting mechanism strains thereupon. Hereto-.

the sides 4: when in lowered hoisting mechanism, preferably being engaged by a crossbar or similar bearing upon the curved levers, with the extreme outer ends of the chains attached to the corresponding outer ends of said levers. Thus a direct vertical lift is secured and then the continued winding up of the chains automatically transfers the lifting power'to the outer ends of said levers and a smooth continuous strain is held on the gears through which the power for hoisting is transmitted.

Referring to the drawings illustrating a preferred embodiment of the invention, Figurev 1 is a side view of my novel form of hoisting apparatus applied to an automobile coal truck;

Fig. 2 is a plan view showing a portion of the dumping body broken away to illustrate the frame and hoisting construction underneath.

Fig. 1 illustrates in conventional lorm an automobile chassis, comprising the engine 1, sides of the chassis 2, drivers seat 3, and suitable transmission and running mechanism which need not be or included. Mounted on the rear portion of the chassis 2 are side frames 4, 4, supported on cross-beams 5. Two of these crossbeams at the forward end may be extended to the side frames 4. to carry a bar 6 supporting a gearing to operate the hoist. A rear cross member 7 unites the extreme ends of the frame 4. As illustrated in tl1e;d1'a\vings, I have shown the wagon body 8 considerably broader than the side frames 4 and therefore overhanging the chassis and the wheels, said body being of any usual height or construction and built with cross members of angle iron or the like 9 which rest upon position. This body is pivoted at 10 to the rearmost portion of the frame, two or more pairs of iron bearing, fixed on the but powerful direct lift of further illustrated braces 11 and 12 being pivoted upon a shaft 13 on which the body swings.

My novel form of hoisting levers are arranged at each side of the frame 4 and comprise curved arms 14:. Each of these arms is of a single continuous piece of metal and 'is pivoted directly to the bottom of the body 8 at 15, said arm being formed with a short section, from 15 to 16, then with an inclined surface from 16 to 17 and then on the arclor other line from 17 to its extreme inner end 18. Near the pivoted end 15 is a short spur arm or link 19 having a cross rod 20 uniting the ends of said link and a brace 21 also connecting same. The usual cross braces 22, 23, 24 and 25 are applied, substantially as shown. 'It will be appreciated that the utiliz'fl't n of such cross rods in substantially the position illustrated in the drawing gives immense strength and rigidity to the arc-like form of the hoisting apparatus, constituting braces in appropriate position to resist and withstand longitudinal, transverse and torsional strains from all directions. Where straight hoisting arms are employed, the usual cross braces only impart strength in the plane of the levers, but in the arrangement of my hoisting apparatus, the increased strength afforded will be appreciated. Furthermore, this arrangement leaves the.in ner-end portions 18 free from cross braces, rods or the like and this enables the projecting ends of the hoisting arms in my apparatus to extend a considerable dis tance forwardly, which thus gives greater length to the arms 14 and consequently a greater capacity-for height of hoisting and yet enables said arms to be entirely free from the transmission mechanism 26 or similar'portions 0fthe driving mechanism in the chassis. My present construction greatly simplifies the use of ro ls or other bearing parts which require to be oiled, and I am enabled to have the hoisting arms entirely free from the necessity of carrying rollers, bearings or the like. To this end I provide a grooved anti-friction roller 27 journaled directly on the side frame 4 or over the chassis sides 2 in alinement with each hoisting arm 14, a common shaft 28 uniting these two grooved rollers. Said rollers and the inclined portion from 16 to 1-7 of each hoisting arm are, when the 55 body is lowered, in proper position to secure the increased power afforded by the inclined surface from 16 to 17 "during the initiation of the hoisting action, when the maximum power must be exerted, thus simplifying the gearing required. To operate p the hoist arms, I provide a pair of chains 30 having the inner end link held by a pin passing through the bent-over end of the bar 14 as shown at 31, and the other end secured toa shaft 32, about which shaft said chains are wound through rotation of the gears 33, 34, 35 and 36, the latter being fitted with a handle 37 to be manually rotated, a frame and guard 38 therefor being provided as usual. Each chain,30 is led under the cross bar 20 uniting the ends of the short links 19. Therefore, in the opera- -tion' of the hoist apparatus the first rotaf tive movement of the shaft 32 winding up said chains 30, will exert a direct lifting tension on the cross-beam 20, as well as a lateral tension on the ends 18 of each link,

thus imparting a forward movement thereto.

and also raising thelbody 8 through the sliding action of he inclined pontion from 16 to 17 of each armflon' the g o,oved roller 27. Asthe bodyjs partially lifted, the end 18 of'each arm '14 swings downwardly, forcing the arms 14 into contact with the grooved rollers 27 during the continued winding ofthe chains 30. The curve of the arm 14 may be so formed as to increase the speed proportionately to the lifting power required for the final operation of the hoisting mechanism, thus accelerating the elevabody 8 lifted to the limit of its inclination,

said chain and arms will also constitute a rigid, firm and automatic stop to limit tion of the body 8. \Vhen the chain is'en-. tirely wound upon the shaft 32 and thethe further tilting movement of the body 8,

as the end of thechain will be 'completely' wound on the shaft andjthe end-most link held at 31 to the end 18 of each arm, binds' said arm securely to the shaft and vehicle.

The last operation of the lifting action per, mits the arm 14 to slide'free of the-roller 27 and to rest directly upon the axle 32,. but,

and quick-acting hoisting arrangement, per-' mitting great length of hoisting levers, af-

fording a large increase of power at the initiation of the hoisting action and great speed at the completion of the same. Also that the formation of the hoisting levers 14 with combined circular and" inclined plane faces constitutes a peculiar type of bent arm from which I obtain important results. I believe that this type of hoist, firmly pivoted to the body and free of rollers, etc., with a capacity for great power and speed, is an important improvement in this art, and therefore I wish to claim the same broadly. Also the long length of hoistin arms, which, though rigidly braced, have t e .innerefiiis.v entirely free and capable of clearing the? running gear, transmission mechanism*'? or partswof the motor of the chassis, are important features and lVhile I have herein illustrated the hoist in a simple form," it will. be appreciated that. I may utilize the same inconnection with a rear elevating hoisting mechanism also, and, if desired, on turntable trucks or the like. 1

My invention is further described and defined in the form of claims as follows:

1. Apparatus of the kind described, comprising a vehicle truck, a body mounted thereon with provision 'for lifting at an inclination, mechanism to lift and incline said clination,

body with relation to the truck, said mechanism including a pair of hoisting levers ar-' ranged at each side of the body, a bearing for said levers intermediate their length over which said levers travel, flexible actuating means for said pair of levers attached to the outer ends of said levers and aboaring for the flexible winding meanson said levers whereby the initial winding will exert a vertical lifting tension on the levers and said body, and then complete the lifting .action by actuating said levers from their outer ends. I

2. Apparatus of the kind described, comprising a vehicle truck, a body mounted thereon, with provision for lifting at an ining a pair body and having inclined surfaces to cooperate with an anti-friction roller during and a bearing contour for said levers'extending above the bottom of the body when lowered position and adapted to also, bear on said anti-friction roller during a portion of the hoisting action.- I

Apparatus of the kind described, comprising a vehicle truck, a body adapted to be inclined thereon,'a pair of .curvedhoistprisinga vehicle truck,

and hoisting mechanism, includ-' of hoisting levers pivoted ,tothe ing levers pivoted to the body and having cross braces .extending adjacent each end across an arc of the levers, whereby a combined horizontal, bracing is secured.

4'. Apparatus of the kind described, com;

prising a vehicle truck, a body adapted to,

be inclined thereon, a pair of curved hoist at an angle, hoisting bottom of said body and the top of the truck, said mechanism including a pair of each lever having one body and the other end curved arm levers,- end pivoted to the free, an anti-friction bearing on said truck for each lever, theouter end of said levers normally extending above the plane of said bearing, flexible means connected with the' free ends of said levers and adapted to wind upon a shaft at the other side of said antifriction bearings, a cross-bar on said curved levers normally below said anti-friction bearing and in position to be engaged by the flexible winding means at a distance below the winding shaft therefor, whereby the winding of said flexible means will first exert a substantially vertical lifting action on the hoisting levers and when the crossbar is above the level of the winding shaft,

will then transfer the lifting power ofsaid flexible winding means to'the outer ends of the hoisting levers to complete the hoisting action.

prising a vehicle truck, a body mounted thereon to be hoisted mechanism therefor operating between the '6. Apparatus of the kind described, com:

beahoisted at an angle thereon, hoisting mechanism operable between the bottom of said body and the'top ofthe truck, said mechanism including a pair of curved arm levers, flexible winding means attached to the outer end' of said levers, a spur arm from each curved lever, means on said spur arms to contact with the flexible winding means, so arranged as to provide a substantially vertical lifting action on the body at the initiation of the hoisting action and -thereafter to bear directly against the body at the limit of its hoisting action, thereby providing a four-point bearing on said body and constituting a stop to limit said hoist- 'ing action.

, 4 7 ROBERT WIROSE. Witnesses:

'JAMES R. HODDER, HA-RoLn J CLARK.

signed my in the presence of two subscribing witnesses.

vertical and torsional a body adapted to 

